Posted by **Katelynn S** on Thursday, January 12, 2012 at 1:50am.

While racing on a flat track, a car rounds a curve of 56 m radius and instantaneously experiences a centripetal acceleration of 36 m/s2. How fast was the car going?

I know the answer i s45 I just need to know why ASAP!!!!!!!!!!!!!!!!!!!!

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